Hedman headers

[nohn]

I a new set of headers and when I took my car to have them installed, the connection on the exhaust side of the headers didn't match the connection on my flow master exhaust. Has anyone run into this problem? The plan is to return them if there isn't something I can order to get them to connect. Thanks for the feed back in advance.

[joe_padavano]

Originally Posted by nohn

I a new set of headers and when I took my car to have them installed, the connection on the exhaust side of the headers didn't match the connection on my flow master exhaust. Has anyone run into this problem? The plan is to return them if there isn't something I can order to get them to connect. Thanks for the feed back in advance.

What do you mean by "didn't match"? Are you referring to the collector diameter and bolt pattern or the length? If you're worried about length, there's no set position for the flange. Your current exhaust will need to be cut and welded to fit.

[nohn]

[quote=joe_padavano;18094]What do you mean by "didn't match"? Are you referring to the collector diameter and bolt pattern or the length?
It is the bolt pattern that doesn't match. The headers have holes for 3 bolts and the pipes have only 2.

[Oldsguy]

the three bolt pattern is a standard header flange. The two bolt pattern is a common factory type flange. I am surprised that the headers and the exhaust pipe line up other than that. Your exhaust shop should be able to fix that problem for you without too much trouble, it will mean you have to buy some pipe though.

[J-(Chicago)]

Pretty cool that thing is in Italy. Any more pictures?

[joe_padavano]

Originally Posted by J-(Chicago)

Pretty cool that thing is in Italy.

OK, sorry that I didn't look at the location. The new headers should have come with the correct collectors. You need to weld them to the exhaust pipes.

[Oldsguy]

Oh man! Sorry I missed that part. Here is a link where you can buy the collector ring flange and then just have the shop fabricate up a new exhaust pipe from the header to the muffler, I am sure they can put a flare on the pipe, and don't forget the gasket too.

http://www.speedwaymotors.com/m/47_R...ollectors.html

[nohn]

Thanks for the info, I will keep you posted on how it all works out. I will post more pic once I figure out how I did it the first time.

[nohn]

Here are a few pic's of the work I have done so far.

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[nohn]

A few more.


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[Oldsguy]

Looks Good! Let me know how the Edelbrock carb works for you. Is that the 800 cfm model? I had one on my 455 in the Delta I owned, it worked pretty good for me. Is that a Torker manifold?

[nohn]

no the carb is a 650 and the mani is the edelbrock performer rpm.

[CHRISH8846]

You may find that that intake gasket is not very compatible with your manifold, I thought E-brock recommended seperate intake gaskets, not the turkey tray.

[Oldsguy]

I have used the turkey tray with aftermarket intakes like Edelbrock before, they are just as hard to put in. I am seriously thinking about using a four part gasket set next time around. They are sure a pain.

[joe_padavano]

Originally Posted by Oldsguy

I have used the turkey tray with aftermarket intakes like Edelbrock before, they are just as hard to put in. I am seriously thinking about using a four part gasket set next time around. They are sure a paint.

I must admit that I'm at a loss to understand this aversion to the factory gasket. I've NEVER had a problem using one with factory or aftermarket intakes. The trick is that the four end bolt holes have raised ridges that fit into recesses in the bolt holes in the head. This positively locates the gasket and prevents if from moving during the install. I use RTV around both sides of the four cooling holes but nothing around the intake ports. I do use a brand new gasket every time, since it's the embossed bead around each port that does the sealing. I also use FelPro gaskets exclusively. I usually throw away the rubber end seals and just use a thick bead of RTV on the ends of the block. Let the RTV skin over before installing the intake.

[Oldsguy]

Well Joe, you need to teach me some tricks then because every time I have installed one it has had the tendency to try and "pop off" one or the other of the heads, in spite of the raised ridges. I suppose it is all in the technique.

[nohn]

when i ordered the mani and carb from AJ USA parts it recommended that fel-pro gasket. I also used RTV to get a good seal and to keep it in place. so far I haven't had any problems.

[71 delta88guy]

I'd try to get a mr gasket intake set. They have a dense side gasket and you can either use the ends-if rubber and have lips to keep them from popping out- or use a good quality rtv for the ends. Some gasket suppliers have thick side gaskets with the built in line of sealer. These SUCK. They compress and compress and never stop compressing. So you end up with leaks no matter what you do. find a gasket with dense side pieces-ie thin, tighten the intake several times,use good sealant and be done with it forever.That's why I like the mr gasket set. Hope they are still making it. been a while.